Re: VFD's / Skates, Tim & JohnS.

--- In CAD_CAM_EDM_DRO@y..., "johnhe" <johnhe@s...> wrote:

Johnhe,
Stop wallying around.
You have been given good advise in using a single phase input VFD to
get 240v three phase out.
What's the problem with this???????
Why do you insist on chasing this 460 v line. For a start we are 440v
here in the UK not 460v.
The vast majority of US three phase power runs on 220v three phase so
I can't see what you are getting on about.
You don't need 440v. What you aim to do in your garage can be done on
single phase input - no problem - end of story.

JS.

> Problem, I am unable to find anywhere selling single phase 460volt
input
> VFD's. All the 460volt ones I've found want three phase input. Why
is it
> difficult to step up the voltage after it's been VFD'ed? Is it
something to
> do with the way the transformer responds to the difficult
frequencies? Any
> ideas who might sell a 460volt single phase input VFD if not? I
feel the
> appeal of the midget machines returning. Probably find out the
motor has
> been replaced with a single phase 230volt now.... sod's law! : )
>
> Thanks for the help,
> John H